51.36 SD/MMC Host Controller (SDHC) Electrical Specifications

Figure 51-36. SD/SDIO/MMC SDHC Module AC Timing Diagram
Table 51-50. SD Host Controller AC Timing Specifications (1)
AC CHARACTERISTICSStandard Operating Conditions: VDDREG=VDDIO=AVDD 2.7V to 3.63V (unless otherwise stated)

Operating temperature:

-40°C ≤ TA ≤ +85°C for Industrial

Param. No.SymbolCharacteristicsMin.Typ.Max.UnitsConditions
SD_1fGCLK_SDHCx_SLOWCommon SDHC slow input clock frequencyFCLK_31MHz
SD_3fGCLK_SDHCx_CORESDHCx input clock frequencyFCLK_33MHz
SD/SDIO Default Speed Mode
SD_5tSDCKClock Frequency25MHz
SD_7tDUTYDuty Cycle50%
SD_9tHIGHClock High Time500/tSDCKns
SD_11tLOWClock Low Time500/tSDCKns
SD_13tRISEClock Rise TimeDI_29nsSee parameter in I/O Specifications
SD_15tFALLClock Fall TimeDI_31nsSee parameter in I/O Specifications
SD_17tIN_SETUPInput Setup Time3ns
SD_19tIN_HOLDInput Hold Time0ns
SD_21tOUT_DLYOutput Delay Time7nsVDDIOx = 3.3V,

CLOAD = 30 pF(MAX)

SD_23tOUT_HOLDOutput HOLD Time1ns
SD/SDIO High Speed Mode
SD_25tSDCKClock Frequency52MHz
SD_27tDUTYDuty Cycle50%
SD_29tHIGHClock High Time500/tSDCKns
SD_31tLOWClock Low Time500/tSDCKns
SD_29tRISEClock Rise TimeDI_29nsSee parameter in I/O Specifications
SD_31tFALLClock Fall TimeDI_31nsSee parameter in I/O Specifications
SD_33tIN_SETUPInput Setup Time3ns
SD_35tIN_HOLDInput Hold Time0ns
SD_37tOUT_DLYOutput Delay Time7nsVDDIOx = 3.3V,

CLOAD = 30 pF(MAX)

SD_39tOUT_HOLDOutput HOLD Time0ns
Note:
  1. All output pins with 30pF load.